20604523642 has 8 divisors (see below), whose sum is σ = 32250558816. Its totient is φ = 9854337372.

The previous prime is 20604523631. The next prime is 20604523661. The reversal of 20604523642 is 24632540602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20604523598 and 20604523607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223962168 + ... + 223962259.

It is an arithmetic number, because the mean of its divisors is an integer number (4031319852).

Almost surely, 2^20604523642 is an apocalyptic number.

20604523642 is a deficient number, since it is larger than the sum of its proper divisors (11646035174).

20604523642 is a wasteful number, since it uses less digits than its factorization.

20604523642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447924452.

The product of its (nonzero) digits is 69120, while the sum is 34.

The spelling of 20604523642 in words is "twenty billion, six hundred four million, five hundred twenty-three thousand, six hundred forty-two".